the car looks like it would be a lot of fun to drive, if its
light weight enough to accelerate rapidly out of the twisty sections of the roads curves,
especially if its got
huge and effective disc brakes and proper tires,
that allow you to brake hard enough to allow you to hang onto the speed longer that most of the competition!
I don,t know the rules your particular club uses, the classes I used to run in they basically let you run a wide range of cars, but that was 30 years ago.
while I can,t help but be impressed with the projects potential as a club racer I personally would question the reason you chose a 3" stroke crank combo, if the rules don,t lock car weight into a ratio of the engines displacement , like a few clubs do.
Lets say just for discussion purposes, its 8 lbs per cubic inch of engine displacement in this case
I.E. if the car has 327 cubic inches x 8=roughly 2615 lbs
Engine Torque levels generated is generally the result of cylinder fill efficiency, compression ratio and engine displacement .
engine rpm limits most reasonable priced chevy v8 engines built with common race parts to around 4300 fpm if you intend to have much longer term engine durability and youll be lucky to reach 1.4 ft lbs per cubic inch and 1.6 hp per cubic inch
lets do some math (just to compare potential)
horse power = engine torque x rpm /5252
E.T. from power & weight
http://www.wallaceracing.com/et-hp-mph.php
a 3" stroke solid lifter roller engine
thats 8600rpm max
if camed and set up correctly peak efficiency,peak torque , generally falls near .70 of max piston speed
example 8600 x.7=
6020 rpm
1.4 x 327= 457 ft lbs/ 1.6 x 327=
523 hp
a 3.75" stroke solid lifter roller engine
thats 6880rpm max
if camed and set up correctly peak efficiency , peak torque generally falls near .70 of max piston speed
example 6880 x .7=
4816 rpm
1.4 x 406= 569 ft lbs/ 1.5 x 406=
609 hp
thats roughly a huge 15% advantage for the larger displacement engine if the car weights the same weight, and theres no way the smaller engine competes in this case.
make the car weight the same 8 lbs per cubic inch 3248 lbs
redue the calcs and youll find the smaller 327 has a very slight 2% advantage in theory , but in practice the extra torque of the larger engine and extra weight make the advantage, almost negligible with a good driver making the difference
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